13144249081 has 16 divisors (see below), whose sum is σ = 13527678528. Its totient is φ = 12763987200.

The previous prime is 13144249051. The next prime is 13144249123. The reversal of 13144249081 is 18094244131.

It is a cyclic number.

It is not a de Polignac number, because 13144249081 - 2⁹ = 13144248569 is a prime.

It is a super-2 number, since 2×13144249081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13144249081.

It is not an unprimeable number, because it can be changed into a prime (13144249051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12047346 + ... + 12048436.

It is an arithmetic number, because the mean of its divisors is an integer number (845479908).

Almost surely, 2^13144249081 is an apocalyptic number.

It is an amenable number.

13144249081 is a deficient number, since it is larger than the sum of its proper divisors (383429447).

13144249081 is a wasteful number, since it uses less digits than its factorization.

13144249081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2232.

The product of its (nonzero) digits is 27648, while the sum is 37.

The spelling of 13144249081 in words is "thirteen billion, one hundred forty-four million, two hundred forty-nine thousand, eighty-one".